1. Environmental Chemistry Lab Ozone Lab

2. Contents 1. Absorption of light 2. Absorption of UV by Ozone 3. Oxidizing Power of Ozone 4. Absorption Spectrum of Ozone

3. Exp. 1: Absorption of UV Apparatus: Tonic water, plastic cups, UV source, black paper

4. Exp. 1: Absorption of UV The upper quarter-inch of the tonic water cup "glows" blue

5. Exp. 2: Absorption of UV by Ozone Apparatus: O 3 generator, glass tube, fluorescent screen, UV light

6. Exp. 2: O 3 Absorption of UV Ozone absorbs UV to produce a shadow

7. Exp. 3: Oxidizing Power of Ozone Apparatus: O 3 generator, KI, chlorine water, bleach, 3% H 2 O 2, food coloring

8. Exp. 4: UV Spectrum of Ozone Apparatus: Spectrophotometer (200-400 nm), gas cell

9. Exp. 4: UV Spectrum of Ozone Ozone absorbs strongly in the UV region

10. References Daniel, D.W. (1994) A Simple UV Experiment of Environmental Significance. Journal of Chemical Education, Vol. 71, No. 1, pp. 83. Ondrus, M.G. (1996) Environmental Chemistry: Experiments and Demonstrations, 2 nd Ed. Wuertz Publishing Ltd., Winnepeg.